A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

Learn how to navigate the first Mercury retrograde of 2025 and see if your zodiac sign is among those affected by this ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

much like our solar system’s innermost planet Mercury. At about 6 light years away, Barnard’s star is the nearest single star ...

This week Mercury joins the queue. Now every other world in our solar system will be visible among the stars at the same time — if you know where to look. According to Gerard van Belle ...

As the fastest-moving planet in our solar system, Mercury goes retrograde three to four times a year for about three weeks.

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new study.

Mercury retrograde complicates communication, travel, and technology, leading to misunderstandings, travel delays, and ...